Are you really in danger when you are taking those hairpin turns and death-defying loops on a roller coaster? Discover how amusement park rides use the laws of physics to simulate danger, while keeping the rides safe.

Are you really in danger when you are taking those hairpin turns and death-defying loops on a roller coaster? Discover how amusement park rides use the laws of physics to simulate danger, while keeping the rides safe.

Explore practical uses of genetic engineering techniques to generate a plant that produces a hepatitis B protein for potential vaccine use. Examine the use of restriction enzymes for cloning and plasmid mapping.

Run this model of the carbon cycle to see how carbon circulates through the atmosphere, biosphere, oceans and the earth's crust. Explore ways that human input might change global outcomes in the future.

Play an animation that incorporates most types of energy transfers and conversions into a chain reaction. Then rerun the animation and answer questions to test your understanding of how energy can travel and change.

Explore the chemistry and physiology of running by choosing an avatar and running a series of timed races. Set a running goal to successfully complete a full marathon. Then perform an energy calculation to see how many kilocalories were burned during the race.

Learn more about key chemistry-related people and events from prehistoric times to the present. The timeline targets major breakthroughs in the development of chemical science, including the discovery of key elements, as well as the birth and death dates of important contributors chemistry history.

Learn about the economics of operating a chemical factory as you try to optimize the process of a simulated Haber-Bosch process ammonia fertilizer plant. Try to maximize profitability by using your knowledge of chemistry to fine-tune the reaction: adjusting temperature and pressure in the reaction chamber, switching the type of catalyst, and adjusting the rate that the product (ammonia) and impurities are removed.

Use real demographic data and a simulator to understand the factors that control human population growth, recognize the demographic transition in human history, and gain a sense of how population demographics has a very human impact in all areas of our planet.

Follow the steps in the development of a cancer drug — from initial research on the targeted disease to the drug’s use in humans. Learn how drug design targets a disease by exploiting the structure of a protein that causes that disease.

Discover neutrino oscillation and try to match real experiments with this simulator. Do electrons oscillate? What happens to the rate of neutrino detection as you move closer and farther from the source?

This simulator will let you explore various diseases: Kold, a caricature of the common cold; Impfluenza, which resembles an influenza outbreak; and Red Death, a fast-spreading epidemic with a high mortality rate. What factors influence the spread of these diseases, and what can we do to counter them?